{"id":"CVE-2026-73499","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-73499","generatedAt":"2026-10-28T03:29:23.868Z","title":"etcd is a distributed key-value store for the data of a distributed system.","description":"etcd is a distributed key-value store for the data of a distributed system. Prior to versions 3.5.33, 3.6.14, and 3.7.1, a user granted READ permission on a single exact key can use the Watch gRPC API with clientv3.WithFromKey() to receive watch events for every key lexicographically greater than or equal to the permitted key. In server/etcdserver/api/v3rpc/watch.go, the open-ended RangeEnd sentinel is rewritten before the RBAC permission check in server/auth/range_perm_cache.go function isRangeOpPermitted, causing the request to be treated as an exact-key watch. Range/Get and DeleteRange requests are not affected, and the issue affects only clusters with authentication enabled. This issue is fixed in versions 3.5.33, 3.6.14, and 3.7.1.","published":"2026-08-12T22:17:17.000Z","lastModified":"2026-10-24T15:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"4.0","score":7.1,"severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-863"],"affected":[],"epss":{"score":0.00663,"percentile":0.51415,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://github.com/etcd-io/etcd/commit/6643f80602461a6095c9b294b6512fd9719bef41","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/7cf71ec9e2ec54230a5454392fa4ffd4574b41ed","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/afeaa624da19085b47fb5ccc7c22a8c421bc2eae","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/commit/e863b001bbf3367003a543aa3099db9892134cd7","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.5.33","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.6.14","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/releases/tag/v3.7.1","source":"security-advisories@github.com"},{"url":"https://github.com/etcd-io/etcd/security/advisories/GHSA-xg4h-6gfc-h4m8","source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73499","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}